Typewriter



TYPEWRITER Filed Aug. 19/1957 2 Sheets-Sheet vl W. M. PATTON ,TYPEWRITER Dec. 13, 1938.

Filed Aug. 19, 1937 2 Sheets-Sheet 2 Patented Dec. 13, 1938 UNITED STATES PAT UFFICE 6 Claims.

This invention relates to a typewriting machine and it aims to provide an exceedingly simple, compact and relatively inexpensive form capable of manufacture for any desired use, especially as a portable typewriter or as a toy.

The more specic objects and advantages will be pointed out or become apparent from the description following taken in connection with the accompanying drawings from which it will be particularly noted that the operation of the type levers will serve dually to position the type centrally for printing and will then move the type for a printing operation.

In the said drawings:

Figure l is a View in plan, partly broken away, disclosing the improved typewriter;

Figure 2 is a view taken substantially on the plane of line 2 2 of Figure l;

Figure 3 is a rear end elevation of the typewriter;

Figure 4 is a detail section taken on the line 4-4 of Figure 3 and Figure 5 is a detail section taken on the line 5-5 of Figure 2.

Referring specifically to the drawings wherein like reference characters designate like or similar parts throughout, Il) designates a suitable skeleton frame carrying type levers II, equipped with keys I2, and depressible in the usual manner. Said keys are pivotally mounted on a rod I3 disposed transversely of the frame and the forward ends of said levers normally engage a rest or bar I4 on the frame. Said type levers are separated and guided in their Vertical movements by tines I5 and I6, respectively, located adjacent the front and rear of the frame.

Suitably rigidly mounted on the frame in parallelism are guide bars Il which slidably mount a frame or spider I8, the latter having guide rails I9 adjacent those at I1. The facing surfaces of said guides or rails I'I and I9 are channeled to accommodate anti-friction bearings preferably in the form of balls 2B.

A plate of angle form in vertical cross section is employed at 2|. Such plate or bracket is carried by the spider I8 so that it moves longitudinally of the typewriter therewith and is also mounted so as to slide transversely of the type- Depending from the bracket 2I at the rear of the machine is a Vertical cam plate 25 which preferably has two cut-outs at 26, provided with upwardly converging inclined or other cam surfaces 2l, defining the same, at the junction of which rollers 28 are journaled on transverse pins 29 suitably mounted in the plate 25. It will be noted that the levers I I are shaped so that their rear ends form two groups as at A, which groups are narrower than the cut-out portions 26. Levers II are normally maintained and urged into lowermost position in any suitable manner as through the medium of a coil spring 3l) stretched across and in contact with the same and fastened as at 3l to opposite sides of the typewriter frame III.

Depression of the keys I2 will cause the levers II to raise at their rearward ends, thereby engaging an adjacent cam surface 2l, causing plate 25 and accordingly the entire carriage 2I to move transversely or laterally of the machine. The rear ends of the levers l! are inclined or of cam shape as at 33 so that through the elevation of the forward ends of levers II, their engagement will first move the bracket 2I laterally, positioning the cam edge 33 in Contact with the adjacent roller 28 and thereby pushingthe spider I8 rearwardly of the machine toward the ribbon 34, platen 35 and carriage 35.

Attention is called to the fact that the ribbon mechanism and carriage form no part of the present invention specifically and have been merely broadly referred to, it being understood that the escapement may be of any desired form and operated in any suitable marmer.

A printing wheel is shown at 34 containing type of elements 35 corresponding to the keyboard. The keys and keyboard as at I2 may be arranged according to the standard keyboard or any special or other keyboard desired. Said printing wheel 34 has a vertical shaft 36B to which it is keyed, suitably journaled in a bearing 3'! fastened for instance to one of the rails 23 by means of arms 38. At the lower end, shaft 35a carries a pinion 39 enmeshed with the teeth 40 of a skeleton form of gear segment 4I keyed to a vertical shaft 42. Said shaft 42 is suitably journaled in a bearing 43 rigid on the longitudinally movable spider I8. Said spider I8 is urged toward the front of the machine or retracted position by means of a contractile coil spring 44, fastened as at 45 to the frame Ill and as at 46 toy the bearing 43 or other portion ofthe spider I8.

A horizontal portion of the bracket 2I has a vertical pin or stud 4'I disposed in an enlongated slot 48 of an arm 49 of the gear segment 4I, so as to swing said gear segment through lateral or transverse sliding movement of the bracket 2| Presuming operation of the typewriter, the levers I I are shown in normal position in full lines in the drawings. The cam surfaces 21 and co-acting cam surfaces 33 and the adjacent parts are so proportioned that depression of any key I2 will result in a type lever II pivoting on the rod I3 and moving upwardly at the rearward end. Such rearward end will belong to one of the two groups A and will engage one of the cam Surfaces 2l, moving the plate 25 and bracket 2I transversely until its cam surface 33 engages the adjacent roller 28, whereupon cam action of surface 33 with the roller pushes the spider I8 rearwardly moving the type wheel 34 into engagement with the ribbon 34 and the latter against the paper carried by the platen and carriage at 35 and 36, following which the lever is released, so that the lever will be moved to retracted position and the spider will be moved to retracted position through the medium of the springs 3G and 44, which have been tensioned through the printing operation. It will be clear that the plate 25 and bracket 2I are movable transversely in either direction so as to co-act with all of the levers according to their arrangement and proportions.

Attention is directed to the fact that before the spider I8 moves longitudinally to print, the levers I I move the bracket 2| transversely to either side according to the position of the lever and its arrangement, and its motion is imparted to the segment 4I through the interengagement of stud 4l with slot 48, the segment swinging the pinion 39, shaft 3%"a and type wheel 34 so as to position the desired type element 35 corresponding to the depressed key, in central or printing position,

Ynearest the ribbon 34 and the paper, to the end that the further movement of the same lever II will push the spider toward the ribbon and paper and effect the printing operation, following which the escapement not specically described, will operate to space to accommodate the following printing impression.

Various changes may be resorted to provided they fall within the spirit and scope of the in- Vention.

I claim as my invention:

l. A machine of the class described having depressible lever means, .a movable spider, a plate engageable by the lever means along cam surfaces to move the plate laterally and longitudinally, means to move the spider through longitudinal movement of the plate, printing means on the spider, mechanism to center the printing means through the lateral movement of the plate, the longitudinal movement of the plate being subsequent to the lateral movement to effect a printing operation.

2. A machine of the class described having depressible levers, a plate having cam surfaces engageable by the levers to slide the plate laterally, a spider movable longitudinally with said plate, printing means carriedby the spider, mechanism operable through the lateral movement of the plate toy select a desired type of the printing means, and co-acting means between the plate and levers to move the plate and spider longitudinally to effect a printing operation.

3. A machine of the class described having a frame, a bracket thereon, means on the frame mounting the bracket for transverse and longitudinal sliding including a spider with which the bracket moves longitudinally, a type wheel, a shaft mounting the type wheel and journaled on the spider, gear means on the frame, lever members, cam means on the bracket engageable by the lever members to move the bracket transversely and means on the lever members to impart a longitudinal movement to the bracket to move the type wheel to printing position, and a connection between the gear means and bracket to operate the shaft and printing wheel.

4. A machine of the class described having a frame, a bracket thereon, means on the frame mounting the bracket for transverse and longitudinal sliding including a spider with which the bracket moves longitudinally, a type wheel, a shaft mounting the type wheel and journaled on the spider, gear means on the frame, lever members, cam means on the bracket engageable by the lever members to move the bracket transversely and means on the lever members to impart a longitudinal movement to the bracket to move the type wheel to printing position, a connection between the gear means and bracket to operate the shaft and printing wheel, comprising a pin .and elongated slot, means touurge retraction of the bracket, and means urging retraction L of the lever members.

5. A machine of the class described having a frame provided with parallel guide rails, a spider having guide rails co-acting with the first mentioned guide rails and mounting the spider for longitudinal movement, a printing wheel device, a bracket carried by the spider and slidable thereon transversely of the machine, means mounting the printing wheel device on the spider and locating it over the bracket, lgearing to rotate the printing wheel device through the sliding movement of the bracket, a plate on the bracket provided with cam means, and operating levers movable against the cam means to slide the bracket and co-acting means between the levers and plate serving to then slide the spider at a right angle thereto to printing position.

6. A machine of the class described having a frame provided with parallel guide rails, a spider having guide rails co-acting with the rst mentioned guide rails and mounting the spider for longitudinal movement, a printing wheel device, a bracket carried by the spider and slidable thereon transversely of the machine, means mounting the printing wheel device on the spider and locating it over the bracket, gearing to rotate thel printing wheel device through the sliding movement of the bracket, a plate on the bracket provided with cam means, operating levers movable against the cam means to slide the bracket and co-acting means between the levers and plate serving to then slide the spider at a right angle thereto to printing position, said bracket being movable in opposite directions and the cam means comprising converging cam surfaces providing two cutaway portions, the said operating levers at the cooperating ends being grouped in said two cutaway portions to co-act with the adjacent cam surfaces.

WINIFRED M. PATTON.

Liu. 

